Non curing butyl mastic tapes are commonly used in construction and industrial applications due to their excellent sealing properties and resistance to weathering, UV radiation and ozone. - Manhole sealant mastic is typically supplied in rolls or strips that can be easily applied to the joint surface by hand or with a dispensing tool. - The sealant should be compressed to about half of its original thickness to ensure proper adhesion and sealing performance. - The joint should be checked for leaks after installation and periodically inspected for signs of damage or degradation. - Butyl rubber sealants are compatible with a wide range of materials, including concrete, metal, plastic, rubber and glass. However, they may not adhere well to some surfaces that are oily, greasy or contaminated with chemicals. - Some butyl rubber sealants may emit a strong odor during installation, which can be reduced by using a low-VOC or odorless formula. How to install this manhole sealant mastic ? Dry joint surface if wet.(Joint surface must be dry.) Clean all dirt, sand, mud, etc. from joint Remove roll from carton.(Keep away from dirt, etc.) Place exposed surface down/ place against vertical surface/press against concrete Apply sealant in continuous ring around the joint (DO NOT STRETCH!) To complete sealant ring cut off excess sealant with knife or sharp object Cut sealant so that when cut, the ends form a butt joint.(DO NOT OVERLAP!) Knead the ends together to finish sealant ring Remove protective release paper from the sealant ring Assemble the joint. Align structure section as straight as possible for proper entry of the tongue into the receiving groove and home the structure section.
